Using Improved Fibonacci Hash Transform to Increase the Robustness of Meaningful Watermarking Algorithm
Yin De-hui, BINGFA LI · Journal of Wuhan Yejin University of Science and Technology · 2005
In order to enhance the security of hashing algorithm,the authors propose a generalized two dimensional matrix hashing algorithm.The algorithm has several optional matrices, and the image can be restored through reverse transform. Thus, it is very difficult to decode the hashing algorithm; the security is enhanced via using the selected matrix and iteration time as the secret keys.Numerical experiments show that, under various image processing and attacks, the proposed algorithm has such advantages as good robustness, high security,requiring not the original image for watermarking extraction, etc.